gdb/mi/mi-cmds.c

   1 /* MI Command Set for GDB, the GNU debugger.
   2
   3    Copyright (C) 2000, 2001, 2003, 2007, 2008, 2009, 2010
   4    Free Software Foundation, Inc.
   5
   6    Contributed by Cygnus Solutions (a Red Hat company).
   7
   8    This file is part of GDB.
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 3 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  22
  23 #include "defs.h"
  24 #include "top.h"
  25 #include "mi-cmds.h"
  26 #include "gdb_string.h"
  27
  28 extern void _initialize_mi_cmds (void);
  29 struct mi_cmd;
  30 static struct mi_cmd **lookup_table (const char *command);
  31 static void build_table (struct mi_cmd *commands);
  32
  33
  34 struct mi_cmd mi_cmds[] =
  35 {
  36   { "add-inferior", { NULL, 0 }, mi_cmd_add_inferior },
  37   { "break-after", { "ignore", 1 }, NULL },
  38   { "break-condition", { "cond", 1 }, NULL },
  39   { "break-commands", { NULL, 0 }, mi_cmd_break_commands },
  40   { "break-delete", { "delete breakpoint", 1 }, NULL },
  41   { "break-disable", { "disable breakpoint", 1 }, NULL },
  42   { "break-enable", { "enable breakpoint", 1 }, NULL },
  43   { "break-info", { "info break", 1 }, NULL },
  44   { "break-insert", { NULL, 0 }, mi_cmd_break_insert},
  45   { "break-list", { "info break", }, NULL },
  46   { "break-passcount", { NULL, 0 }, mi_cmd_break_passcount},
  47   { "break-watch", { NULL, 0 }, mi_cmd_break_watch},
  48   { "data-disassemble", { NULL, 0 }, mi_cmd_disassemble},
  49   { "data-evaluate-expression", { NULL, 0 }, mi_cmd_data_evaluate_expression},
  50   { "data-list-changed-registers", { NULL, 0 }, mi_cmd_data_list_changed_registers},
  51   { "data-list-register-names", { NULL, 0 }, mi_cmd_data_list_register_names},
  52   { "data-list-register-values", { NULL, 0 }, mi_cmd_data_list_register_values},
  53   { "data-read-memory", { NULL, 0 }, mi_cmd_data_read_memory},
  54   { "data-write-memory", { NULL, 0 }, mi_cmd_data_write_memory},
  55   { "data-write-register-values", { NULL, 0 }, mi_cmd_data_write_register_values},
  56   { "enable-timings", { NULL, 0 }, mi_cmd_enable_timings},
  57   { "enable-pretty-printing", { NULL, 0 }, mi_cmd_enable_pretty_printing},
  58   { "environment-cd", { NULL, 0 }, mi_cmd_env_cd},
  59   { "environment-directory", { NULL, 0 }, mi_cmd_env_dir},
  60   { "environment-path", { NULL, 0 }, mi_cmd_env_path},
  61   { "environment-pwd", { NULL, 0 }, mi_cmd_env_pwd},
  62   { "exec-arguments", { "set args", 1 }, NULL },
  63   { "exec-continue", { NULL, 0 }, mi_cmd_exec_continue},
  64   { "exec-finish", { NULL, 0 }, mi_cmd_exec_finish},
  65   { "exec-jump", { NULL, 0 }, mi_cmd_exec_jump},
  66   { "exec-interrupt", { NULL, 0 }, mi_cmd_exec_interrupt},
  67   { "exec-next", { NULL, 0 }, mi_cmd_exec_next},
  68   { "exec-next-instruction", { NULL, 0 }, mi_cmd_exec_next_instruction},
  69   { "exec-return", { NULL, 0 }, mi_cmd_exec_return},
  70   { "exec-run", { NULL, 0}, mi_cmd_exec_run},
  71   { "exec-step", { NULL, 0 }, mi_cmd_exec_step},
  72   { "exec-step-instruction", { NULL, 0 }, mi_cmd_exec_step_instruction},
  73   { "exec-until", { "until", 1 }, NULL},
  74   { "file-exec-and-symbols", { "file", 1 }, NULL },
  75   { "file-exec-file", { "exec-file", 1 }, NULL },
  76   { "file-list-exec-source-file", { NULL, 0 }, mi_cmd_file_list_exec_source_file},
  77   { "file-list-exec-source-files", { NULL, 0 }, mi_cmd_file_list_exec_source_files },
  78   { "file-symbol-file", { "symbol-file", 1 }, NULL },
  79   { "gdb-exit", { NULL, 0 }, mi_cmd_gdb_exit},
  80   { "gdb-set", { "set", 1 }, NULL },
  81   { "gdb-show", { "show", 1 }, NULL },
  82   { "gdb-version", { "show version", 0 }, 0 },
  83   { "inferior-tty-set", { NULL, 0 }, mi_cmd_inferior_tty_set},
  84   { "inferior-tty-show", { NULL, 0 }, mi_cmd_inferior_tty_show},
  85   { "interpreter-exec", { NULL, 0 }, mi_cmd_interpreter_exec},
  86   { "list-features", { NULL, 0 }, mi_cmd_list_features},
  87   { "list-target-features", { NULL, 0 }, mi_cmd_list_target_features},
  88   { "list-thread-groups", { NULL, 0 }, mi_cmd_list_thread_groups },
  89   { "remove-inferior", { NULL, 0 }, mi_cmd_remove_inferior },
  90   { "stack-info-depth", { NULL, 0 }, mi_cmd_stack_info_depth},
  91   { "stack-info-frame", { NULL, 0 }, mi_cmd_stack_info_frame},
  92   { "stack-list-arguments", { NULL, 0 }, mi_cmd_stack_list_args},
  93   { "stack-list-frames", { NULL, 0 }, mi_cmd_stack_list_frames},
  94   { "stack-list-locals", { NULL, 0 }, mi_cmd_stack_list_locals},
  95   { "stack-list-variables", { NULL, 0 }, mi_cmd_stack_list_variables},
  96   { "stack-select-frame", { NULL, 0 }, mi_cmd_stack_select_frame},
  97   { "symbol-list-lines", { NULL, 0 }, mi_cmd_symbol_list_lines},
  98   { "target-attach", { "attach", 1 }, NULL },
  99   { "target-detach", { NULL, 0 }, mi_cmd_target_detach },
 100   { "target-disconnect", { "disconnect", 0 }, 0 },
 101   { "target-download", { "load", 1 }, NULL},
 102   { "target-file-delete", { NULL, 0 }, mi_cmd_target_file_delete },
 103   { "target-file-get", { NULL, 0 }, mi_cmd_target_file_get },
 104   { "target-file-put", { NULL, 0 }, mi_cmd_target_file_put },
 105   { "target-select", { "target", 1 }, NULL},
 106   { "thread-info", { NULL, 0 }, mi_cmd_thread_info },
 107   { "thread-list-ids", { NULL, 0 }, mi_cmd_thread_list_ids},
 108   { "thread-select", { NULL, 0 }, mi_cmd_thread_select},
 109   { "trace-define-variable", { NULL, 0 }, mi_cmd_trace_define_variable },
 110   { "trace-find", { NULL, 0 }, mi_cmd_trace_find },
 111   { "trace-list-variables", { NULL, 0 }, mi_cmd_trace_list_variables },
 112   { "trace-save", { NULL, 0 }, mi_cmd_trace_save },
 113   { "trace-start", { NULL, 0 }, mi_cmd_trace_start },
 114   { "trace-status", { NULL, 0 }, mi_cmd_trace_status },
 115   { "trace-stop", { NULL, 0 }, mi_cmd_trace_stop },
 116   { "var-assign", { NULL, 0 }, mi_cmd_var_assign},
 117   { "var-create", { NULL, 0 }, mi_cmd_var_create},
 118   { "var-delete", { NULL, 0 }, mi_cmd_var_delete},
 119   { "var-evaluate-expression", { NULL, 0 },  mi_cmd_var_evaluate_expression},
 120   { "var-info-path-expression", { NULL, 0 }, mi_cmd_var_info_path_expression},
 121   { "var-info-expression", { NULL, 0 }, mi_cmd_var_info_expression},
 122   { "var-info-num-children", { NULL, 0 }, mi_cmd_var_info_num_children},
 123   { "var-info-type", { NULL, 0 }, mi_cmd_var_info_type},
 124   { "var-list-children", { NULL, 0 }, mi_cmd_var_list_children},
 125   { "var-set-format", { NULL, 0 }, mi_cmd_var_set_format},
 126   { "var-set-frozen", { NULL, 0 }, mi_cmd_var_set_frozen},
 127   { "var-set-update-range", { NULL, 0 }, mi_cmd_var_set_update_range },
 128   { "var-set-visualizer", { NULL, 0 }, mi_cmd_var_set_visualizer},
 129   { "var-show-attributes", { NULL, 0 }, mi_cmd_var_show_attributes},
 130   { "var-show-format", { NULL, 0 }, mi_cmd_var_show_format},
 131   { "var-update", { NULL, 0 }, mi_cmd_var_update},
 132   { NULL, }
 133 };
 134
 135 /* Pointer to the mi command table (built at run time) */
 136
 137 static struct mi_cmd **mi_table;
 138
 139 /* A prime large enough to accomodate the entire command table */
 140 enum
 141   {
 142     MI_TABLE_SIZE = 227
 143   };
 144
 145 /* Exported function used to obtain info from the table */
 146 struct mi_cmd *
 147 mi_lookup (const char *command)
 148 {
 149   return *lookup_table (command);
 150 }
 151
 152 /* stat collecting */
 153 struct mi_cmd_stats
 154 {
 155   int hit;
 156   int miss;
 157   int rehash;
 158 };
 159 struct mi_cmd_stats stats;
 160
 161 /* our lookup function */
 162 static struct mi_cmd **
 163 lookup_table (const char *command)
 164 {
 165   const char *chp;
 166   unsigned int index = 0;
 167
 168   /* compute our hash */
 169   for (chp = command; *chp; chp++)
 170     {
 171       /* some what arbitrary */
 172       index = ((index << 6) + (unsigned int) *chp) % MI_TABLE_SIZE;
 173     }
 174   /* look it up */
 175   while (1)
 176     {
 177       struct mi_cmd **entry = &mi_table[index];
 178       if ((*entry) == 0)
 179         {
 180           /* not found, return pointer to next free. */
 181           stats.miss++;
 182           return entry;
 183         }
 184       if (strcmp (command, (*entry)->name) == 0)
 185         {
 186           stats.hit++;
 187           return entry;         /* found */
 188         }
 189       index = (index + 1) % MI_TABLE_SIZE;
 190       stats.rehash++;
 191     }
 192 }
 193
 194 static void
 195 build_table (struct mi_cmd *commands)
 196 {
 197   int nr_rehash = 0;
 198   int nr_entries = 0;
 199   struct mi_cmd *command;
 200   int sizeof_table = sizeof (struct mi_cmd **) * MI_TABLE_SIZE;
 201
 202   mi_table = xmalloc (sizeof_table);
 203   memset (mi_table, 0, sizeof_table);
 204   for (command = commands; command->name != 0; command++)
 205     {
 206       struct mi_cmd **entry = lookup_table (command->name);
 207
 208       if (*entry)
 209         internal_error (__FILE__, __LINE__,
 210                         _("command `%s' appears to be duplicated"),
 211                         command->name);
 212       *entry = command;
 213       if (0)
 214         {
 215           fprintf_unfiltered (gdb_stdlog, "%-30s %2d\n",
 216                               command->name, stats.rehash - nr_rehash);
 217         }
 218       nr_entries++;
 219       nr_rehash = stats.rehash;
 220     }
 221   if (0)
 222     {
 223       fprintf_filtered (gdb_stdlog, "Average %3.1f\n",
 224                         (double) nr_rehash / (double) nr_entries);
 225     }
 226 }
 227
 228 void
 229 _initialize_mi_cmds (void)
 230 {
 231   build_table (mi_cmds);
 232   memset (&stats, 0, sizeof (stats));
 233 }